U.K. RETAILERS' LOYAL CUSTOMER 'CARD WARS' PROVE COSTLY

LONDON (FNS) -- Most major retailers in the United Kingdom have grown their sales over the last two years by launching loyalty-card programs.But it remains to be seen whether retailers are attracting truly loyal customers, and whether they have the capability of extracting useful information from the data provided by the programs.Millions of loyalty cards have been issued to U.K. consumers since Tesco,